http://www.rssboard.org/rss-specification 720 https://escholarship.org/uc/cpl_eh/rss Recent eScholarship items from Environmental Health Fri, 4 Sep 2026 16:46:31 +0000 https://escholarship.org/uc/item/36q6790w <p>Rural kitchens of solid-fuel burning households constitute the microenvironment responsible for the majority of human exposures to health-damaging air pollutants, particularly respirable particles and carbon monoxide. Portable nephelometers facilitate cheaper, more precise, time-resolved characterization of particles in rural homes than are attainable by gravitational methods alone. However, field performance of nephelometers must contend with aerosols that are highly variable in terms of chemical content, size, and relative humidity. Previous field validations of nephelometer performance in residential settings explore relatively low particle concentrations, with the vast majority of 24-hour average gravitational PM2.5 concentrations falling below 40 μg/m3. We investigate relationships between 24-hour gravitational particle measurements and nephelometric data logged by the personalDataRAM in highly polluted rural Chinese kitchens, where gravitationally determined 24-hour average... https://escholarship.org/uc/item/36q6790w Thu, 13 Apr 2006 00:00:00 +0000 Fischer, Susan L Koshland, Catherine P. https://escholarship.org/uc/item/05h2t55h <p>Rural kitchens of solid-fuel burning households constitute the microenvironment responsible for the majority of human exposures to health-damaging air pollutants, particularly respirable particles and carbon monoxide. Portable nephelometers facilitate cheaper, more precise, time-resolved characterization of particles in rural homes than are attainable by gravitational methods alone. However, field performance of nephelometers must contend with aerosols that are highly variable in terms of chemical content, size, and relative humidity. Our investigation of relationships between 24-hour optical and gravitational particle measurements in rural Chinese kitchens depicts that where relative humidity remained below 95%, nephelometric response was strongly linear despite complex mixtures of aerosols. Where 95% relative humidity was exceeded for even a brief duration, nephelometric data were nonsystematically distorted, and neither concurrent relative humidity measurements nor use of... https://escholarship.org/uc/item/05h2t55h Wed, 2 Nov 2005 00:00:00 +0000 Fischer, Susan L Koshland, Catherine P